Heney mubnoh



(No Model.)

. MUENGH, FYILTERINGY BAG.

WITNESSES: 1N VENTOR ATTORNEY N. PETERS. Fholo-Liflmgnphlr. Washington,ac.

UNITED STATES PATENT OFFICE.

HENRY MUENGH, OF BROOKLYN, NEW YORK.

FlLTERlNG-BAG.

SPECIFICATION forming part of Letters Patent No. 272,576, dated February20, 1883.

Application filed June 26, 1882. (No model.)

To all u'hom t t may concern:

Be itknown that I, HENRY MUENOH, of Brooklyn, in the county of Kings andState of New York, have invented certain new and useful Improvements inFiltering-Bags, of which the following is a specification.

In the filtering ot' saccharine liquors woven bags of twi lled fabricwere heretofore employed which were suspended and surrounded bycylindrical sleeves of coarser material and of considerably lessdiameter, so as to form in the bags a number of folds and thereby alarge filtering-surface in asmall space. These filtering-bags areemployed to retain the scum and other gummy impurities contained in thesaccharine liquor, but require to be frequently removed and washed so asto clean them from the impurities deposited on their surface. Thetwilled'liltering-bags heretofore used had the disadvantage that thesurtace was of a too uniform character, so as not to offer a sufficientresistance to the passage of the liquor, so that the scum was mainlycollected. at the lower part ofthe bag, whereby the filteringoperationdid not take place uniformly over the whole bag. This necessitated thefrequent removal and washing of the bags, by which they were soon wornout, became less and less adapted for filtering, and caused aconsiderable loss of time and labor in their frequent changing.

The object of my invention is to furnish for sugar-refineries and otherestablishments in which filtering operations are. carried on an improvedfiltering-bag by which a more uniform and regular filtering action isobtained;

and the invention consists of a filtering-bag made of a fabric woven atboth sides with raised intercrossing ribs, so that cellular spaces orindentations are formed between the libs, within which the scum isdeposited in an effective and uniform manner over the entire surface ofthe bags.

1n the accompanying drawings, Figure 1 represents a side view of myimproved filteringcal transverse section of a portion of the fabric fromwhich my bag is made, drawn nearly in natural size.

similar letters of reference indicatecorresponding parts.

In the drawings, A represents my improved filtering-bag, which is closedin the customary manner at the bottom and hemmed at the upper edge. Itis woven on power-looms in the manner well knownto every practicalweaver, with extra warp and filling threads at eachside, whichthreads-are bound otf in such a manner that rectangularly-inter-crossingribs to a are formed both sides of the web, and that between the ribscellular depressions or indentations b b are obtained. The effect of theintercrossing ribs and cellular depressions is that a considerablylarger filtering-surface is obtained which impedes the passage of thesaccharine liquor through the bag, and which serves to retain the scumand otherimpurities in a more effective manner. The result willdepressions or indentations between the ribs,

substantially as and for the purpose set forth.

In testimony that I claim the foregoing as my invention I have signed myname in presence of two subscribing witnesses.

HENRY MUENCH.

Witnesses PAUL GOEPEL, SIDNEY MANN.

